Use of Tröger's Base as a Scaffold for New Chiral Molecular Tweezers: Synthesis of Trimeric, Fused Tröger's Bases†
Some preliminary results were described in T. Mas, C. Pardo, J. Elguero, Mendeleev Commun., 2004, 235.
Abstract
Four novel molecular tweezers, 6–9, have been synthesized having, for the first time, three fused Tröger's bases. The compounds differ in the relative configuration of the three fused methylene bridges and have been unambiguously characterized by NMR.